Monoazo dye.



E@ m@ PATEFT OFFICE.

:mslmm Emzmnfsmm, ANB ARTHUR ZAM, 0F 'VGHWINKEL 'NEAR 'EILERL mm, MRMANY, Assmmcm 'm mm3' :UNFABRIKEN VORM. FRIEDR. BAYER an COQ,

Apglmifm meri' July fw,

\/ wm-R naphtho-7su1fonc acid containing a hete ronuclear ring:

Patented Apr. 8,1913.

'Y so H .N U s cmm c-CHi-NHZ (5) 0H X 0H '65 Wlth .tha 5.5d1Oxy-2.2-dmaphthylamln- X meaning U-M, which niay be replad 7'? "(hbllfomc amd" by -O---5 and mSM hege @laments o1 S02.H\/ \\/\/NH\/\ \/S0S group of elemens bemg radicals of a dlval I lent nature and forming in the above fon l f ['70 mula with the other elements 'the betwy monazolemucleus H H 'The new dyes are obtained by comblqmg The new lye` havlng most probably the the diaz@ compouns peparsd from ammoformula:

SOaHV /\`/NH\/\/\/SO3H j, \/.\N=N-CH;C( cwm( OH im Xf v onfare qfer being dxfd nd puerized :in the' Qf their kahn saltg clark powders soluble in Water; vyiellng u on refcton mth simmons Chlomd angl hy rochlQrlc ac ld naphthoxnzole 7 sulfonic powder soluble in concentrated sulfuric acid with a blue coloration; yielding upon reduction Withstannous chlorid and hydrofonia aci-d; dyeing cottonbluish red, whichV In testimony whereof We have hereunto set our-hands 1n the `presence of two subscribing Witnesses.

KURT DSMART. [ne] ARTHUR ZAM. [ne] lVitnessesr ALBERT F. NUFER, LUTTE LUSKMANN. 

